3v4l.org

run code in 300+ PHP versions simultaneously
<?php $query = [ 'set1' => ['col1' => 'val1', 'col2'=> 'val2'], 'set2' => ['col1' => 'val3', 'col2'=> 'val4']]; var_dump($query['set1'] === $query['set2']);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false)

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199.3 ms | 403 KiB | 188 Q